perf tools: Pass context to perf hook functions
Pass a pointer to perf hook functions so they receive context
information during setup.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@fb.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Joe Stringer <joe@ovn.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/20161126070354.141764-6-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/perf-hooks.h b/tools/perf/util/perf-hooks.h
index 1d482b2..838d579 100644
--- a/tools/perf/util/perf-hooks.h
+++ b/tools/perf/util/perf-hooks.h
@@ -5,10 +5,11 @@
extern "C" {
#endif
-typedef void (*perf_hook_func_t)(void);
+typedef void (*perf_hook_func_t)(void *ctx);
struct perf_hook_desc {
const char * const hook_name;
perf_hook_func_t * const p_hook_func;
+ void *hook_ctx;
};
extern void perf_hooks__invoke(const struct perf_hook_desc *);
@@ -26,7 +27,8 @@ static inline void perf_hooks__invoke_##name(void) \
extern int
perf_hooks__set_hook(const char *hook_name,
- perf_hook_func_t hook_func);
+ perf_hook_func_t hook_func,
+ void *hook_ctx);
extern perf_hook_func_t
perf_hooks__get_hook(const char *hook_name);